Color

#378159

#378159
hex#378159
rgbrgb(55, 129, 89)
hslhsl(148, 40%, 36%)
oklchoklch(0.545 0.098 157.2)
Closest name: Amazon (#387b54)Relative luminance 0.1723

Colors that go with #378159

Charcoal, Crimson and Medium Violet Red lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#81375e

#3a8137 · #37817e

#593781 · #815937

Split-complementary

Open in tool →

#7e3781 · #81373a

#373a81 · #81375e · #817e37

Contrast

#378159 as textRatioAAAA largeAAAFix
Aaon white
4.72:1passpassfail
  • AAA: use #296043 as the text (7.37:1)
Aaon black
4.45:1failpassfail
  • AA: use #39845c as the text (4.63:1)
  • AAA: use #48a875 as the text (7.13:1)
  • AA: or shift the background to #fafafa (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #378159 as the background.

Brands using this color

mcpConnect your agent — build around #378159
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #378159 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/378159-a2beb2-d259d4-1f2d2c-eaf1e9?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md